{"product_id":"carrier-pg8jeb042045aaja-transformer-o8sti3","title":"OEM Carrier Furnace Transformer 40VA 120V\/24V for PG8JEB042045AAJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V\/24V for Model PG8JEB042045AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PG8JEB042045AAJA\u003c\/strong\u003e gas furnace. The transformer converts 120V line voltage to the 24V used by your furnace's control circuit — powering the thermostat, gas valve, inducer relay, and all safety controls. When this part fails, the entire control circuit goes dark: the thermostat gets no signal, the inducer never starts, and the furnace produces a complete no-heat condition. It is one of the first components to check when nothing responds at the thermostat.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary | 24V secondary | 60Hz | Replaces OEM part 322666-701 (superseded by HT680054) | Class 2 listed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances, preventing brownout dropout and nuisance tripping of downstream safety controls. Generic transformers with loose ±10% tolerances can starve the gas valve solenoid under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always photograph the existing wiring before disconnecting. Mount the transformer to the furnace cabinet, reconnect primary and secondary leads, and restore power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for \u003cstrong\u003eCarrier model PG8JEB042045AAJA\u003c\/strong\u003e gas furnace. Supersedes legacy part number 322666-701. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — order with confidence and get same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643092291955,"sku":"CARRIE-PG8JEB042045AAJA-TRANSFORMER-322666-701","price":55.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643092324723,"sku":"CARRIE-PG8JEB042045AAJA-TRANSFORMER-322666-701-GEN","price":48.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-322666-701_bc7dc130-f10f-4f76-b43a-1c8c67d8db33.jpg?v=1775031821","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pg8jeb042045aaja-transformer-o8sti3","provider":"National HVAC Parts","version":"1.0","type":"link"}